6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
0.004 Low
EPSS
Percentile
72.0%
The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-5627-1 advisory.
An out-of-bounds read vulnerability was discovered in the PCRE2 library in the compile_xclass_matchingpath() function of the pcre2_jit_compile.c file. This involves a unicode property matching issue in JIT-compiled regular expressions. The issue occurs because the character was not fully read in case-less matching within JIT. (CVE-2022-1586)
An out-of-bounds read vulnerability was discovered in the PCRE2 library in the get_recurse_data_length() function of the pcre2_jit_compile.c file. This issue affects recursions in JIT-compiled regular expressions caused by duplicate data transfers. (CVE-2022-1587)
Note that Nessus has not tested for these issues but has instead relied only on the application’s self-reported version number.
#%NASL_MIN_LEVEL 80900
##
# (C) Tenable, Inc.
#
# The descriptive text and package checks in this plugin were
# extracted from Ubuntu Security Notice USN-5627-1. The text
# itself is copyright (C) Canonical, Inc. See
# <https://ubuntu.com/security/notices>. Ubuntu(R) is a registered
# trademark of Canonical, Inc.
##
include('compat.inc');
if (description)
{
script_id(165325);
script_version("1.4");
script_set_attribute(attribute:"plugin_modification_date", value:"2023/07/12");
script_cve_id("CVE-2022-1586", "CVE-2022-1587");
script_xref(name:"USN", value:"5627-1");
script_name(english:"Ubuntu 20.04 LTS / 22.04 LTS : PCRE vulnerabilities (USN-5627-1)");
script_set_attribute(attribute:"synopsis", value:
"The remote Ubuntu host is missing one or more security updates.");
script_set_attribute(attribute:"description", value:
"The remote Ubuntu 20.04 LTS / 22.04 LTS host has packages installed that are affected by multiple vulnerabilities as
referenced in the USN-5627-1 advisory.
- An out-of-bounds read vulnerability was discovered in the PCRE2 library in the
compile_xclass_matchingpath() function of the pcre2_jit_compile.c file. This involves a unicode property
matching issue in JIT-compiled regular expressions. The issue occurs because the character was not fully
read in case-less matching within JIT. (CVE-2022-1586)
- An out-of-bounds read vulnerability was discovered in the PCRE2 library in the get_recurse_data_length()
function of the pcre2_jit_compile.c file. This issue affects recursions in JIT-compiled regular
expressions caused by duplicate data transfers. (CVE-2022-1587)
Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version
number.");
script_set_attribute(attribute:"see_also", value:"https://ubuntu.com/security/notices/USN-5627-1");
script_set_attribute(attribute:"solution", value:
"Update the affected packages.");
script_set_cvss_base_vector("CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:P");
script_set_cvss_temporal_vector("CVSS2#E:F/RL:OF/RC:C");
script_set_cvss3_base_vector("CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H");
script_set_cvss3_temporal_vector("CVSS:3.0/E:F/RL:O/RC:C");
script_set_attribute(attribute:"cvss_score_source", value:"CVE-2022-1587");
script_set_attribute(attribute:"exploitability_ease", value:"Exploits are available");
script_set_attribute(attribute:"exploit_available", value:"true");
script_set_attribute(attribute:"vuln_publication_date", value:"2022/05/11");
script_set_attribute(attribute:"patch_publication_date", value:"2022/09/22");
script_set_attribute(attribute:"plugin_publication_date", value:"2022/09/22");
script_set_attribute(attribute:"plugin_type", value:"local");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:20.04:-:lts");
script_set_attribute(attribute:"cpe", value:"cpe:/o:canonical:ubuntu_linux:22.04:-:lts");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre2-16-0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre2-32-0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre2-8-0");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre2-dev");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre2-posix2");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:libpcre2-posix3");
script_set_attribute(attribute:"cpe", value:"p-cpe:/a:canonical:ubuntu_linux:pcre2-utils");
script_end_attributes();
script_category(ACT_GATHER_INFO);
script_family(english:"Ubuntu Local Security Checks");
script_copyright(english:"Ubuntu Security Notice (C) 2022-2023 Canonical, Inc. / NASL script (C) 2022-2023 and is owned by Tenable, Inc. or an Affiliate thereof.");
script_dependencies("ssh_get_info.nasl");
script_require_keys("Host/cpu", "Host/Ubuntu", "Host/Ubuntu/release", "Host/Debian/dpkg-l");
exit(0);
}
include('debian_package.inc');
if ( ! get_kb_item('Host/local_checks_enabled') ) audit(AUDIT_LOCAL_CHECKS_NOT_ENABLED);
var os_release = get_kb_item('Host/Ubuntu/release');
if ( isnull(os_release) ) audit(AUDIT_OS_NOT, 'Ubuntu');
os_release = chomp(os_release);
if (! ('20.04' >< os_release || '22.04' >< os_release)) audit(AUDIT_OS_NOT, 'Ubuntu 20.04 / 22.04', 'Ubuntu ' + os_release);
if ( ! get_kb_item('Host/Debian/dpkg-l') ) audit(AUDIT_PACKAGE_LIST_MISSING);
var cpu = get_kb_item('Host/cpu');
if (isnull(cpu)) audit(AUDIT_UNKNOWN_ARCH);
if ('x86_64' >!< cpu && cpu !~ "^i[3-6]86$" && 's390' >!< cpu && 'aarch64' >!< cpu) audit(AUDIT_LOCAL_CHECKS_NOT_IMPLEMENTED, 'Ubuntu', cpu);
var pkgs = [
{'osver': '20.04', 'pkgname': 'libpcre2-16-0', 'pkgver': '10.34-7ubuntu0.1'},
{'osver': '20.04', 'pkgname': 'libpcre2-32-0', 'pkgver': '10.34-7ubuntu0.1'},
{'osver': '20.04', 'pkgname': 'libpcre2-8-0', 'pkgver': '10.34-7ubuntu0.1'},
{'osver': '20.04', 'pkgname': 'libpcre2-dev', 'pkgver': '10.34-7ubuntu0.1'},
{'osver': '20.04', 'pkgname': 'libpcre2-posix2', 'pkgver': '10.34-7ubuntu0.1'},
{'osver': '20.04', 'pkgname': 'pcre2-utils', 'pkgver': '10.34-7ubuntu0.1'},
{'osver': '22.04', 'pkgname': 'libpcre2-16-0', 'pkgver': '10.39-3ubuntu0.1'},
{'osver': '22.04', 'pkgname': 'libpcre2-32-0', 'pkgver': '10.39-3ubuntu0.1'},
{'osver': '22.04', 'pkgname': 'libpcre2-8-0', 'pkgver': '10.39-3ubuntu0.1'},
{'osver': '22.04', 'pkgname': 'libpcre2-dev', 'pkgver': '10.39-3ubuntu0.1'},
{'osver': '22.04', 'pkgname': 'libpcre2-posix3', 'pkgver': '10.39-3ubuntu0.1'},
{'osver': '22.04', 'pkgname': 'pcre2-utils', 'pkgver': '10.39-3ubuntu0.1'}
];
var flag = 0;
foreach package_array ( pkgs ) {
var osver = NULL;
var pkgname = NULL;
var pkgver = NULL;
if (!empty_or_null(package_array['osver'])) osver = package_array['osver'];
if (!empty_or_null(package_array['pkgname'])) pkgname = package_array['pkgname'];
if (!empty_or_null(package_array['pkgver'])) pkgver = package_array['pkgver'];
if (osver && pkgname && pkgver) {
if (ubuntu_check(osver:osver, pkgname:pkgname, pkgver:pkgver)) flag++;
}
}
if (flag)
{
security_report_v4(
port : 0,
severity : SECURITY_WARNING,
extra : ubuntu_report_get()
);
exit(0);
}
else
{
var tested = ubuntu_pkg_tests_get();
if (tested) audit(AUDIT_PACKAGE_NOT_AFFECTED, tested);
else audit(AUDIT_PACKAGE_NOT_INSTALLED, 'libpcre2-16-0 / libpcre2-32-0 / libpcre2-8-0 / libpcre2-dev / etc');
}
Vendor | Product | Version | CPE |
---|---|---|---|
canonical | ubuntu_linux | 20.04 | cpe:/o:canonical:ubuntu_linux:20.04:-:lts |
canonical | ubuntu_linux | 22.04 | cpe:/o:canonical:ubuntu_linux:22.04:-:lts |
canonical | ubuntu_linux | libpcre2-16-0 | p-cpe:/a:canonical:ubuntu_linux:libpcre2-16-0 |
canonical | ubuntu_linux | libpcre2-32-0 | p-cpe:/a:canonical:ubuntu_linux:libpcre2-32-0 |
canonical | ubuntu_linux | libpcre2-8-0 | p-cpe:/a:canonical:ubuntu_linux:libpcre2-8-0 |
canonical | ubuntu_linux | libpcre2-dev | p-cpe:/a:canonical:ubuntu_linux:libpcre2-dev |
canonical | ubuntu_linux | libpcre2-posix2 | p-cpe:/a:canonical:ubuntu_linux:libpcre2-posix2 |
canonical | ubuntu_linux | libpcre2-posix3 | p-cpe:/a:canonical:ubuntu_linux:libpcre2-posix3 |
canonical | ubuntu_linux | pcre2-utils | p-cpe:/a:canonical:ubuntu_linux:pcre2-utils |
6.4 Medium
CVSS2
Attack Vector
NETWORK
Attack Complexity
LOW
Authentication
NONE
Confidentiality Impact
PARTIAL
Integrity Impact
NONE
Availability Impact
PARTIAL
AV:N/AC:L/Au:N/C:P/I:N/A:P
9.1 High
CVSS3
Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
0.004 Low
EPSS
Percentile
72.0%